<html>
    <head>
        <meta http-equiv="content-type" content="text/html;charset=utf-8" />
        <title>Checkbox</title>
    </head>
    <body>
        <h3>复选框：你的爱好</h3>
        <form>
            <!-- <label for="c1">唱歌</label> -->
            <input type="checkbox" id="c1" name="c" />唱歌<br>
            <!-- <label for="c2">旅游</label> -->
            <input type="checkbox" id="c2"  name="c"/>旅游<br>
            <!-- <label for="c3" >看电影</label> -->
            <input type="checkbox" id="c3" checked name="c"/>看电影<br>
        </form>
        <h3>单选：性别</h3>
        <form>
            <label  value="radio">男</label>
            <input type="radio"   name="sex" value="male" id="as"/><br>
            <label  value="radio1">女</label>
            <input type="radio"   name="sex" value="female" id="sd" checked/>
        </form>
<!-- <form>
<input type="radio" name="sex" value="male" /> Male
<br />
<input type="radio" name="sex" value="female" /> Female
</form> -->
    </body>
</html>